enderice2/Fennix
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Added "AddSymbol"

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This commit is contained in:
Alex 2023-02-06 19:32:41 +02:00
parent 88008ac470
commit c74d19e9d2
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 17 additions and 45 deletions
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62
Core/Symbols.cpp
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@ -2,54 +2,10 @@
#include <memory.hpp>
#include <convert.h>
#include <debug.h>
#include <elf.h>
// #pragma GCC diagnostic ignored "-Wignored-qualifiers"
typedef struct
{
unsigned char e_ident[16];
uint16_t e_type;
uint16_t e_machine;
uint32_t e_version;
uint64_t e_entry;
uint64_t e_phoff;
uint64_t e_shoff;
uint32_t e_flags;
uint16_t e_ehsize;
uint16_t e_phentsize;
uint16_t e_phnum;
uint16_t e_shentsize;
uint16_t e_shnum;
uint16_t e_shstrndx;
} Elf64_Ehdr;
typedef struct
{
uint32_t sh_name;
uint32_t sh_type;
uint64_t sh_flags;
uint64_t sh_addr;
uint64_t sh_offset;
uint64_t sh_size;
uint32_t sh_link;
uint32_t sh_info;
uint64_t sh_addralign;
uint64_t sh_entsize;
} Elf64_Shdr;
typedef struct
{
uint32_t st_name;
unsigned char st_info;
unsigned char st_other;
uint16_t st_shndx;
uint64_t st_value;
uint64_t st_size;
} Elf64_Sym;
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
namespace SymbolResolver
{
Symbols::Symbols(uintptr_t ImageAddress)
@ -74,6 +30,9 @@ namespace SymbolResolver
case SHT_SYMTAB:
ElfSymbols = (Elf64_Sym *)(ImageAddress + ElfSections[i].sh_offset);
this->TotalEntries = ElfSections[i].sh_size / sizeof(Elf64_Sym);
if (this->TotalEntries >= 0x10000)
this->TotalEntries = 0x10000 - 1;
debug("Symbol table found, %d entries", this->TotalEntries);
break;
case SHT_STRTAB:
@ -141,4 +100,17 @@ namespace SymbolResolver
Result = this->SymTable[i];
return Result.FunctionName;
}
__no_instrument_function void Symbols::AddSymbol(uintptr_t Address, const char *Name)
{
if (this->TotalEntries >= 0x10000)
{
error("Symbol table is full");
return;
}
this->SymTable[this->TotalEntries].Address = Address;
strcpy(this->SymTable[this->TotalEntries].FunctionName, Name);
this->TotalEntries++;
}
}